package com.cn.springcloudwechat.common.utils;

import net.sf.json.JSONObject;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

public class HttpPostUtil {
	public static String sendPost(String url, String param) {
		PrintWriter out = null;
		BufferedReader in = null;
		String result = "";
		try {
			URL realUrl = new URL(url);
			// 打开和URL之间的连接
			URLConnection conn = realUrl.openConnection();
			// 设置通用的请求属性
			conn.setRequestProperty("accept", "*/*");
			conn.setRequestProperty("connection", "Keep-Alive");
			conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			// 发送POST请求必须设置如下两行
			conn.setDoOutput(true);
			conn.setDoInput(true);
			// 获取URLConnection对象对应的输出流
			out = new PrintWriter(conn.getOutputStream());
			// 发送请求参数
			out.print(param);
			// flush输出流的缓冲
			out.flush();
			// 定义BufferedReader输入流来读取URL的响应
			in = new BufferedReader(new InputStreamReader(conn.getInputStream(),"UTF-8"));
			String line;
			while ((line = in.readLine()) != null) {
				result += line;
			}
		} catch (Exception e) {
			System.out.println("发送 POST 请求出现异常！" + e);
			e.printStackTrace();
		}
		// 使用finally块来关闭输出流、输入流
		finally {
			try {
				if (out != null) {
					out.close();
				}
				if (in != null) {
					in.close();
				}
			} catch (IOException ex) {
				ex.printStackTrace();
			}
		}
		return result;
	}

	/**
	 * 向指定URL发送GET方法的请求
	 * 
	 * @param url
	 *            发送请求的URL
	 * @param param
	 *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
	 * @return URL 所代表远程资源的响应结果
	 */
	@SuppressWarnings("unused")
	public static String sendGet(String url, String param) {
		String result = "";
		BufferedReader in = null;
		try {
			String urlNameString;
			if (!StringUtils.isEmpty(param)) {
				urlNameString = url + "?" + param;
			} else {
				urlNameString = url;
			}
			System.out.println("get URL:" + urlNameString);
			URL realUrl = new URL(urlNameString);
			// 打开和URL之间的连接
			URLConnection connection = realUrl.openConnection();
			// 设置通用的请求属性
			connection.setRequestProperty("accept", "*/*");
			connection.setRequestProperty("connection", "Keep-Alive");
			connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			// 建立实际的连接
			connection.connect();
			// 获取所有响应头字段
			Map<String, List<String>> map = connection.getHeaderFields();
			// 遍历所有的响应头字段
			/*
			 * for (String key : map.keySet()) { System.out.println(key + "--->"
			 * + map.get(key)); }
			 */
			// 定义 BufferedReader输入流来读取URL的响应
			in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
			String line;
			while ((line = in.readLine()) != null) {
				result += line;
			}
		} catch (Exception e) {
			System.out.println("发送GET请求出现异常！" + e);
			e.printStackTrace();
		}
		// 使用finally块来关闭输入流
		finally {
			try {
				if (in != null) {
					in.close();
				}
			} catch (Exception e2) {
				e2.printStackTrace();
			}
		}
		return result;
	}

	/**
	 * @方法名:httpPost
	 * @描述:
	 * @param url
	 * @param map
	 * @return
	 */
	public static String sendPost(String url, Map<String, String> map) {
		String result = "";
		// 创建HttpClientBuilder
		HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
		// HttpClient
		CloseableHttpClient closeableHttpClient = httpClientBuilder.build();

		HttpPost httpPost = new HttpPost(url);
		// httpPost.setConfig(DEFAULT);
		// 创建参数队列
		List<NameValuePair> formparams = new ArrayList<NameValuePair>();
		for (Entry<String, String> set : map.entrySet()) {
			formparams.add(new BasicNameValuePair(set.getKey(), set.getValue()));
		}
		UrlEncodedFormEntity entity;
		try {
			entity = new UrlEncodedFormEntity(formparams, "UTF-8");
			entity.setContentType("application/json");
			httpPost.setEntity(entity);

			HttpResponse httpResponse;
			// post请求
			httpResponse = closeableHttpClient.execute(httpPost);
			HttpEntity httpEntity = httpResponse.getEntity();
			if (httpEntity != null) {
				// 打印响应内容
				result = EntityUtils.toString(httpEntity, "UTF-8");
				// 相应码
				int code = httpResponse.getStatusLine().getStatusCode();
				LogUtils.writeDebugLog("response:" + result + "code:" + code);
			}
			// 释放资源
			closeableHttpClient.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
		return result;
	}

	/**
	 * @方法名:StringPost
	 * @描述:
	 * @param url
	 * @param object
	 * @return
	 */
	public static String sendPostJSON(String url, JSONObject object) throws UnsupportedEncodingException {
		String result = "";
		// 创建HttpClientBuilder
		HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
		// HttpClient
		CloseableHttpClient closeableHttpClient = httpClientBuilder.build();
		System.out.println("url:" + url);
		HttpPost httpPost = new HttpPost(url);
		// httpPost.setConfig(DEFAULT);
		StringEntity entity;
			entity = new StringEntity(object.toString(),"UTF-8");
			System.out.println("model:"+entity.toString());
			// 解决中文乱码问题
			entity.setContentEncoding("UTF-8");
			entity.setContentType("application/json");
			httpPost.setEntity(entity);
		try {
			HttpResponse httpResponse;
			// post请求
			httpResponse = closeableHttpClient.execute(httpPost);

			HttpEntity httpEntity = httpResponse.getEntity();
			if (httpEntity != null) {
				// 打印响应内容
				result = EntityUtils.toString(httpEntity, "UTF-8");
				// 相应码
				int code = httpResponse.getStatusLine().getStatusCode();
				LogUtils.writeDebugLog("response:" + result + "code:" + code);
			}
			// 释放资源
			closeableHttpClient.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
		return result;

	}

	/**
	 * get方法提交
	 * 
	 * @param url
	 *            String 访问的URL
	 *            String 提交的内容
	 * @param repType
	 *            返回类型
	 * @return String
	 */
	public static byte[] getRequest(String url, String repType) {
		String result = "";
		byte[] resByt = null;
		try {
			URL urlObj = new URL(url);
			HttpURLConnection conn = (HttpURLConnection) urlObj.openConnection();
			// 连接超时
			conn.setDoInput(true);
			conn.setDoOutput(true);
			conn.setConnectTimeout(25000);

			// 读取超时 --服务器响应比较慢,增大时间
			conn.setReadTimeout(25000);
			conn.setRequestMethod("GET");
			conn.addRequestProperty("Accept-Language", "zh-cn");
			conn.addRequestProperty("Content-type", repType);
			conn.addRequestProperty("User-Agent",
					"Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727)");
			conn.connect();
			PrintWriter out = new PrintWriter(new OutputStreamWriter(conn.getOutputStream(), "UTF-8"), true);
			if ("image/jpg".equals(repType)) {
				ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
				BufferedImage bufImg = ImageIO.read(conn.getInputStream());
				ImageIO.write(bufImg, "jpg", outputStream);
				resByt = outputStream.toByteArray();
				outputStream.close();

			} else {
				// 取得输入流，并使用Reader读取
				BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
				System.out.println("=============================");
				System.out.println("Contents of get request");
				System.out.println("=============================");
				String lines = null;
				while ((lines = reader.readLine()) != null) {
					System.out.println(lines);
					result += lines;
					result += "\r";
				}
				resByt = result.getBytes();
				reader.close();
			}
			out.print(resByt);
			out.flush();
			out.close();
			// 断开连接
			conn.disconnect();
			System.out.println("=============================");
			System.out.println("Contents of get request ends");
			System.out.println("=============================");
		} catch (MalformedURLException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return resByt;
	}

	/**
	 * 微信ticket换取二维码 (读取图片)
	 * 
	 * @方法名:sendGetPic
	 * @描述:
	 * @param surl
	 * @return
	 */
	public static byte[] sendGetPic(String surl) {
		URL url;
		byte[] content = null;
		try {
			url = new URL(surl);
			BufferedInputStream in = new BufferedInputStream(url.openStream());
			ByteArrayOutputStream out = new ByteArrayOutputStream(1024);
			System.out.println("Available bytes:" + in.available());
			byte[] temp = new byte[1024];
			int size = 0;
			while ((size = in.read(temp)) != -1) {
				out.write(temp, 0, size);
			}
			content = out.toByteArray();
			in.close();
			out.close();
			System.out.println("Readed bytes count:" + content.length);
		} catch (MalformedURLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return content;
	}

	/**
	 * 微信上传素材的请求方法
	 *
	 *            微信上传临时素材的接口url
	 *            要上传的文件
	 * @return String 上传成功后，微信服务器返回的消息
	 */
	public static String httpRequest(String url, String filePath) {
		String result = null;
		HttpURLConnection downloadCon = null;
		InputStream inputStream = null;
		BufferedReader reader = null;
		try {
			URL urlFile = new URL(filePath);
			downloadCon = (HttpURLConnection) urlFile.openConnection();
			inputStream = downloadCon.getInputStream();

			URL urlObj = new URL(url);
			HttpURLConnection con = (HttpURLConnection) urlObj.openConnection();
			// 设置关键字
			con.setRequestMethod("POST"); // 以Post方式提交表单，默认get方式
			con.setDoInput(true);
			con.setDoOutput(true);
			con.setUseCaches(false); // post方式不能使用缓存
			// 设置请求头信息
			con.setRequestProperty("Connection", "Keep-Alive");
			con.setRequestProperty("Charset", "UTF-8");
			// 设置边界
			String BOUNDARY = "---------------------------" + System.currentTimeMillis();
			con.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);
			// 请求正文信息
			// 第一部分：
			StringBuilder sb = new StringBuilder();
			String regex = ".*/([^\\.]+)";
			sb.append("--"); // 必须多两道线
			sb.append(BOUNDARY);
			sb.append("\r\n");
			sb.append("Content-Disposition: form-data;name=\"media\";filename=\"" + filePath.replaceAll(regex, "$1")
					+ "\"\r\n");
			sb.append("Content-Type:application/octet-stream\r\n\r\n");
			byte[] head = sb.toString().getBytes("utf-8");
			// 获得输出流
			OutputStream out = new DataOutputStream(con.getOutputStream());
			// 输出表头
			out.write(head);
			// 文件正文部分
			// 把文件已流文件的方式 推入到url中
			int bytes = 0;
			byte[] bufferOut = new byte[1024];
			while ((bytes = inputStream.read(bufferOut)) != -1) {
				out.write(bufferOut, 0, bytes);
			}
			inputStream.close();
			// 结尾部分
			byte[] foot = ("\r\n--" + BOUNDARY + "--\r\n").getBytes("utf-8");// 定义最后数据分隔线
			out.write(foot);
			out.flush();
			out.close();
			StringBuffer buffer = new StringBuffer();
			// 定义BufferedReader输入流来读取URL的响应
			System.out.println("获取相应码=" + con.getResponseCode());
			reader = new BufferedReader(new InputStreamReader(con.getInputStream()));
			String line = null;
			while ((line = reader.readLine()) != null) {
				buffer.append(line);
			}
			if (result == null) {
				result = buffer.toString();
			}
		} catch (IOException e) {
			e.printStackTrace();
			return null;
		} finally {
			if (reader != null) {
				try {
					reader.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
		return result;
	}
}
